hathorn



No. 609,20I.

Patented Aug. l6, I898. G. H. HATHORN.

SWAGING MACHINE.

(Application filgd Oct. 3, 1895.)

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GEORGE H. I'IATHORN, OF BANGOR, MAINE, ASSIGNOR To THE DIRIGO BALL MANUFACTURING COMPANY, OF SAME PLACE.

SWAGlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 609,201, dated August 16, 1898.

Application filed October 3, i895 $erial No. 564,475. (No model.) i

To all whom, it may concern:

Be it known that I, GEORGE H. HATHORN, a citizen of the United States, residing at Bangor, in the county of Penobscot and State of Maine, have invented anew and useful Forging-Machine; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improved forging-machine for producing irregular forgings from metal bars; and it consists of a table or standprovided with an upright framecontaining a reciprocating slide with means for operating the same and a stationary head adjustably secured to said frame, both head and slide provided with means for holding and retaining forging-dies, as will hereinafter be fully set forth and described.

Throughout the description reference is made to the accompanying drawings in two sheets, in Which- Figure 1 represents a perspective view of my improved forging-machine complete. Fig. 2 is a similar view of the stationary head of my device, showing adjustable die-holder attached. Fig. 3 shows a perspective view of my machine with head removed. Fig. 4 shows a similar view of a die used in my machine. Fig. 5 is a perspective view of the slide used on my device with connectingrod attached.

Similar letters of reference refer to correspondingly like parts throughout the several figures.

The object of my invention is to produce a simple and quicleoperating forging-machine for producing irregular forgings from metal bars and is accomplished in the following manner.

Referring to the drawings, A represents a rectangular-shaped stand supported by legs G, depending from each corner. The lower ends of the legs G, I fasten securely to a frame J, which is in turn fastened to the floor, or the legs G can besecured to the floor direct; but the former method is preferable, as the frame J furnishes meansfor attaching supports K K for the purpose of securing a hori: zontal shaft L directly under the stand A and in line therewith. This shaft L is provided with a power-wheel H, balance-wheel M, and upon its inner extremity a crank-wheel F, having the usual crank-pin, to which is pivoted the lower 'end of a connecting-rod D, which I construct with a strap T, inc-losing half-boxes e e, clamping said crank-pin, and a spring 0 is inserted between said boxes and the end of the connecting-rod D.

The object of the spring 0 is to relieve the strain upon the crank-pin and counteract the jaroccasioned by the sudden change from a downward to an upward movement of the crank-pin in passing by the lower dead-center of the crank-wheel F in the consequent changing from a rotary to a reciprocating motion. 5

The connecting-rod D extends upward through the central opening in the stand A and is pivoted to a vertical slide 0 near its upper end by means of a long wrist-pin N,

as shown in Figs. 1, 3,'and 5 of the drawings. A brace D','fastened to the outer end of the wrist-pin N, extends diagonally downward and isrigidly fastened at a convenientplace to the connecting-rod D and tends to greatly stiffen the connection in the slide 0. This slide 0 consists of a long metal casting havin g its opposite side edges parallel and planed on an incline to fit V-shaped grooves (termed ways a a, planed in the vertical uprights B B, secured to and rising from the top of the stand A near its forward end in a position directly over the crank-wheel F on the horizontal shaft L. These uprights B B are supported in a vertical position and held rigid by the rear brace-rods'R R, attached thereto, and confined at their opposite ends to the rearward portion of the stand A.

Placed in the ,V-shaped groove (1 of one of the uprights B is a strip of steel it, called a manner that turning the screws will force the gib against the edge of the slide, and thus maintain an even contact therewith.

Longitudinally extending upon the front of the slide is a raised surface 0, planed smooth with the exception of a rib d, projecting from its right edge. This rib d extends the entire length of the raised surface 0 and forms a shoulder against which can be placed one edge of a forging-die, as shown in Fig. of the drawings, while the opposite edge of the die is held in place by the use of taper-headed screws entering holes along the opposite edge and bearing against the tapered incline of the said die. With this arrangement the entire length of the die is clamped against the slide without any possibility of its springing, and the raised surface 0 serves as a die-holder, cast of the same piece as the slide. Other holes are drilled and tapped to receive the screws for dies of different widths upon the raised surface 0, and to prevent the die from moving in either longitudinal direction I screw a plate both above and below the same, as shown in Figs. 1 and 5 of the drawings.

Parallel with and directly in front of the lower termini of the vertical uprights B B, I fasten the head of my device, which consists of a solid rectangular-shaped casting E, secured to the uprights by bolts P P, passing through holes in its two lower corners and its upper left'hand corner and provided with nuts turning thereon at the outside of the head. This head E is held away from the left-hand upright B by means of flanges m m, secured to said upright and entering a groove 0", planed in this side of said head. Small set-screws a: 00 are set into the front side of the head E in position to be turned against the flanges m m in the groove 7" for the purpose of furnishing means of regulating the distance between this edge of said head and the upright B. The opposite edge of the head E is adjusted from its neighboring upright B by the use of a set-screw u, screwed into said upright below the fastening-bolt P. This head E is further adjusted in a vertical direction bya set-screw'ndirectly under the lower edge of the same and screwed into the stand A, as shown in Fig. 3 of the drawings.

The inner face of the head E is planed its entire surface and is provided with an adjustable die-holder W, consisting of a plate having a vertical ridge at one edge, against which the die is to be placed, and provided with threaded screw-holes for taper-headed screws, as hereinbefore described, for securing the opposite edge of the forging-die. This die-holder Wis attached to the head E by bolts t t near each end, which pass through slots f f in the head, said bolts being provided with nuts upon their outer ends, which construction allowsa side adjustment of the die and holder from the outside of the machine.

The front edge and upper right corner of the head E are left open and devoid of fastening-bolts of any kind, which produce a perfectly free opening to allow the metal to be forged to be placed between the dies and a free view of the dies during the operation. The manner of using my machine is as follows: One forging-die is placed upon the raised surface 0 of the slide C with its depressed end downward and securely fastened thereto by the screws hereinbefore described or other good and sufficient means. A second die is fastened to the die-holder W of the head E in the same manner with its depressed end upward and adjusted by the different set-screws, so as to be in directline with the opposite die on the slide 0. By

turning on the power the slide is reciprocated and passes the standing die on the head E in both upward and downward movements. The operator inserts the metal to be forged between the head and the uprights B when the moving die is in its upper position and directly over the top of the standing die on the head. The downward stroke of the slide 0 causes the moving die to grasp the metal and forge the same by a rolling and cutting m ovement, carrying the forged article with it, which drops from the bottom of the machine after the dies have passed each other. As the moving die rests until the crank -pin passes over the upper center, the operator is allowed sufficient time to again place the metal in position before the slide again starts downward.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-

1. An improved swaging-machine consisting of a stand having uprights with means for holding a slide; a slide having means for securing a die thereto and reciprocated by attachment with a revolving crank; a head socured parallel to said uprights to extend across the slide, and provided with means for holding a die thereon in line with the die on said slide, and means for adjusting the head vertically, transversely and longitudinally of the base, for the purpose described and substantially as shown and set forth.

2. In a swaging-machine, a frame, an adj ustable head secured thereto, said head being provided with a vertical groove, uprights on the frame, one of which has flanges fitting in the groove of the head, a die-holder secured to the inner face of the head and provided with means for adjusting the die, said head being so arranged that a space is formed therebetween and one of the uprights, as and for the purpose set forth.

3. In the swaging-machine the combination of a stand having vertical uprights provided with guides for receiving a reciprocating slide; a wrist-pin secured to said slide, a connecting-rod attached to said wrist-pin and having a brace extending to the outer end of same, said connecting-rod having at its lower end a box adapted to slide between a strap secured thereto and a spring to retain said box in position, for the purpose described; a power-shaft having a crank-wheel attached to the lower end of said connecting-rod; and means for rotating said shaft for the purpose described and substantially as shown and described.

4. In a swaging-machine provided with a reciprocating slide having means for retaining a die thereon; a stationary head secured to and parallel with the frame of said machine, said head adjustable upon said frame by means of confining-bolts and set-screws bearing against projecting flanges rising from one side of the frame; an adjustable die holder secured to said head and constructed with a ridge and means to secure adie thereto,adjusting-bolts securingthe die-holder to said head; a separating-bolt between the front end of the head and frame on the opposite edge from the flanges, in such manner as to leave an open top and one side for inserting the metal between the dies, for the purpose described and substantially as shown and set forth.

5. An improved swaging-machine consisting of the combination of a stand having dependinglegs, a horizontal shaft secured thereto and provided with power-wheels and connections with a suitable power medium; a crank-wheel secured to one end of said shaft, a connecting-rod pivoted to said crank-wheel by means of a sliding box held in place by a spring, said connecting-rod having its opposite end secured byaWrist-pin toa slide; said wrist-pin having an extended end connected by a brace to the connecting-rod for the purpose described, a slide having a raised surface and longitudinal rib for the purpose described, With means for retaining a forgingdie thereon 5 parallel uprights extending from the top of said stand and having ways for receiving a slide, and also provided with a gib in said Ways adjusted by gib-screws projecting from said upright; one or more flanges projecting from the side of one of the uprights, confining-bolts projecting from said uprights, and a head secured to the same by said confining-bolts, said head having a groove to receive said flanges and set-screws for adj usting the same, an adjustable die holder secured to said head by bolts passing through slots in the latter, and having means for securing a die thereto, a separating bolt between the front edge of the head and frame opposite the flange, all for the purpose described, and substantially as shown and set forth. 7

6. In a swaging-machine having a stationary frame, an adjustable head secured thereto by bolts passing through its lower corners and its upper left corner, said head provided with a groove adapted to receive projecting flanges from the upright of said machine, and adj usted thereon by set-screws a die-holder secured to the inner face of said head and provided with die-holding arrangement, all constructed in such manner as to leave an opening between the head and one of the uprights for inserting the metal between the dies and over the top of the head, substantially for the purpose shown and described.

GEORGE H. HATHORN.

Witnesses:

CALVIN TURNER, P. W. J. LANDER. 

